Home / 1,140-2,750

Finding the Third Proportional to 1,140 and 2,750

Calculator

Solution

The third proportional to 1,140 and 2,750 is: 6,633.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,140 : 2,750 = 2,750 : x
  2. Step 2: Convert to fraction form
    1,140/2,750 = 2,750/x
  3. Step 3: Cross multiply
    1,140x = 2,750 × 2,750
  4. Step 4: Simplify right side
    1,140x = 7,562,500
  5. Step 5: Solve for x
    x = 7,562,500/1,140
  6. Step 6: Final answer
    x = 6,633.77

Related Problems

Find third proportional to 570 and 1,375
Half scale
Find third proportional to 2,280 and 5,500
Double scale
Find third proportional to 1,142 and 2,755
Similar ratio
Find third proportional to 1,710 and 4,125
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.